<template>
  <div>
    <div class="search">
      <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音" />
    </div>
    <div
      class="search-content"
      ref="search"
      v-show="keyword"
    >
      <ul>
        <li
          class="search-item border-bottom"
          v-for="item of list"
          :key="item.id"
          @click="handleCityClick(item.name)"
        >
          {{item.name}}
        </li>
        <li class="search-item border-bottom" v-show="hasNoData">
          没有找到匹配数据
        </li>
      </ul>
    </div>
  </div>
</template>

<script>
  import { mapMutations } from 'vuex'
export default {
  name: 'CitySearch',
  props:{
    cities:Object
  },
  data(){
    return{
      keyword:'',
      list:[],
      timer:null
    }
  },
  computed:{
    hasNoData(){
      return !this.list.length
    }
  },
  methods:{
    handleCityClick(city){
      this.changCity('city')
      this.$router.push('/')
    },
    ...mapMutations(['changCity'])

  },
  watch:{
    keyword(){
      if(this.timer){
        clearTimeout(this.timer)

      }
      if(!this.keyword){
        this.list = []
        return
      }
      this.timer=setTimeout(()=>{
        const result=[]
        for(let i in this.cities){
          this. cities[i].forEach((value)=>{
            if(value.spell.indexOf(this.keyword)>-1||value.name.indexOf(this.keyword)>-1){
              result.push(value)
            }
          })
        }
        this.list=result
      },100)
      
    }
  }
}
</script>

<style lang="stylus" scoped>
  @import '~@/assets/styles/varibles.styl'
  .search
    height: .72rem
    padding: 0 .1rem
    background: $bgColor
    .search-input
      box-sizing: border-box
      width: 100%
      height: .62rem
      padding: 0 .1rem
      line-height: .62rem
      text-align: center
      border-radius: .06rem
      color: #666
  .search-content
    z-index: 1
    overflow: hidden
    position: absolute
    top: 1.58rem
    left: 0
    right: 0
    bottom: 0
    background: #eee
    .search-item
      line-height: .62rem
      padding-left: .2rem
      background: #fff
      color: #666
</style>
